Header box facing tool



April 26, 1938. T. E. SCHLEY ET AL 2,115,430

HEADER BOX FACING TOOL Filed June 20, 1936 INVENTOR Patented APraZ G,i938 4 v '4 j UNITED STATESPATENT-OFFICE,

HEADER BOX FACING TOOL Thomas E. Schley, John R. Ohenall, and Eddie R.Kehrcr, Beaumont, Tex., assignors to Socony-Yacuum Oil Company,Incorporated, New

- York, N. Y., a corporation of New York Application June 20, 1936,,Serial No. 86,324

1 Claim. (01. 90-14) Oilheaters used in the petroleum refining indrel 9extends through the bore Ill in the tool dustry are composed of a numberof tubes, usubody neck 6, and its outboard end is finished with ally 3,4, or 5 inches outside diameter, placed upon a wrench square H. Themandrel 9 is positioned the sidewalls, and under the roof of thecombusand maintained in position by a threaded portion 5 tion chamber ofa pipe still, and in the convecl2, cooperating with threads 13 on theinner end 5 tion section thereof. To accomplish the arrangeof the boreIII in the tool body 5. Externally upon ment of these pipes in anendless coil, the pipe tool body neck 6 there is mounted a facing toolends pass through the wall of the furnace and adhead l4, having the formof a cylindrical block, jacent pipes are connected by having their endsand in a plurality of radial slots l5,in that tool )0 rolled into aforged steel header 'box, which head, there are mounted facing toolslli, which forms a return bend fitting. In-order to have may be held inplace by set screws, or other conaccess to the interior of the tubes forcleaning, venient device. Upon the back side of this tool these headerboxes are fitted with threaded openhead l4, there is a gear 11,non-rotatably secured ings opposite the tube ends, and threaded plugs tothe tool head by a plurality of screws I8. The 15 are run thereinto forclosure. To secure proper tool head l4 and gear l1 are rotatable aboutthe 15 leakproof closure, these threaded plugs are freneck 6 of the toolbody 5, and arebushed therequently fitted so that they make up, with orwithfromby a brass bushing l3. Thrust between tool out a gasket, upon afaced portion, or seat ring head I4 and the enlarged portion of the toolbody upon the outside surface of the header box. In is cared for bythrust washer 20. Mounted upon the necessary operationsof cleaning,these faced tool body neck 6, rearwardly of the gear 11, and m ormachined areas around the threaded plug oriseparated therefrom by thrustwasher 23, is a fice become damaged and must -be refaced to se- S d gblock h Outbflard d of 17001 o y cure tight closure. This invention isdirectly neck 3 is threaded at 25, and cooperating with concerned with anovel machine for accomplishthis threaded portion is feed nut 26,separated 25 ing such refacing, which is adaptable, however, fromsliding block 24 by a thrust washer 21. for any operation of facing tobe carried out ad- When feed nut 26 is tightened, its motion alongjacent a threaded aperture. the/tool body neck 6, transmitted throughthrust This invention has for its object the provision washer 21,sliding block 24, and thrust washer of a tool capable of being used forfacing a sur- 22 to gear 18 and tool head l4, forces the facing faceadjacent a threaded aperture and comprising tools l6 against the work.For convenient sup- 30 threaded chucks for insertion in such apertureport of the tool, which isquite heavy in the larger cooperating with afacing, machining, or countersizes, a suspension ring 28, formed ofsteel rod, is boring tool capable of rotation about a shaft conattachedto sliding block 24 as shown. Sliding centric with and supported by suchchucks. block 24 is keyed to tool body neck 6, to prevent In order thatthis facing tool may be more relative rotation therebetween by a key 29work- 35 readily described, reference is now made to the ing in a keyway30 cut in the tool body neck 6. drawing attached to this specification,showing, Sliding block 24 is somewhat elliptical in shape, in Figure 1,an assembly, in section, of the tool, and has another passage in it,viz, 3|, parallel to in operating position in a header to be faced. Inthe passage 32 through which tool body neck 6 Figure 2 of the-drawing isshown an end view of passes. Passage 3| is bushed with a bushing 33, 10

the facing tool, assembled. In Figure 1, 3 desigand in passage 3| ismounted a driving shaft 34, nates the header box, shown in section, and4 Whose inboard end terminates in a pinion 35 the area thereon which isto be faced. The facengaging gear l1 and whose outboard end termiingtool iscomposed of a tool body. 5 having a mates in a square, or taperkey or other form, at

rearwardly extending neckli, and in the enlarged 36, suitable forconnection to a source of power 45 head of which there are three radialslots 1. In for driving the tool. Shaft 34 is secured in place each ofthese radial slots 1 there isplaced an by a collar 31, fixed byset-screw 38. The gear expanding jaw 8, the outer end of which is propl1andpinion 35 are.encased in a light sheet erly threaded to engage thethreads in the metal guard 39, secured to sliding block 24 by a threadedopening in the header box 3.. The explurality of screws 40. The methodof operationpanding jaws are retained in place by means of of themachine will be evident from the detailed the plate 2|, attached to thetool body 5 by-screws description. l 22. Thesev three expanding jaws 8are forced It will be evident that the tool may beused outward by atapered mandrel 3,the conical point for any operation of machining onthe surface of which engages their tapered bases. This manimmediatelysurrounding a threaded hole, of any 53,

article; an expanding mandrel extending through the tool body. en agingsaid interior threads and operable to radially expand said slips; a toolhead rotatably and slidably mounted upon said tool body, with millingcutters axially disposed on said tool head and a ring gear aflixedthereto; a frame surroundingsaid tool body and slidably mounted thereon,a shaft carried by said frame and on said shaft a pinion engaging saidring gear; and a feed nut, traveling upon the exterior threads on saidtoollbody, adapted to thrust the frame and through it the tool headalong said tool body into engagement with the work.

THOMAS E. SCI-ILEY. JOHN R. CHENAL'L. EDDIE R. KEHRER.

